org.jclouds.cache.AptCache.java Source code

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Here is the source code for org.jclouds.cache.AptCache.java

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/**
 * Licensed to jclouds, Inc. (jclouds) under one or more
 * contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  jclouds licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.jclouds.cache;

import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;

import java.util.concurrent.TimeUnit;

import javax.inject.Singleton;

import org.jclouds.compute.ComputeServiceContext;
import org.jclouds.compute.domain.Image;
import org.jclouds.compute.domain.NodeMetadata;
import org.jclouds.compute.options.RunScriptOptions;
import org.jclouds.scriptbuilder.domain.OsFamily;
import org.jclouds.scriptbuilder.domain.Statement;

import com.google.common.base.Throwables;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Iterables;

/**
 * All that is required to install an start an apt-cacher server and configure clients to use it.
 * 
 * @author David Alves
 * 
 */
@Singleton
public class AptCache extends AbstractCache {

    private static final Iterable<String> DEPS = ImmutableSet.of();

    static class ServerStatement implements Statement {

        @Override
        public Iterable<String> functionDependencies(OsFamily family) {
            return DEPS;
        }

        @Override
        public String render(OsFamily family) {
            switch (family) {
            case UNIX:
                return "apt-get -y install apt-cacher\n"
                        + "echo 'path_map = ubuntu us.archive.ubuntu.com/ubuntu' >> /etc/apt-cacher/apt-cacher.conf\n"
                        + "sed -i 's/AUTOSTART=0/AUTOSTART=1/' /etc/default/apt-cacher\n"
                        + "/etc/init.d/apt-cacher start\n";

            default:
                throw new UnsupportedOperationException();
            }
        }

    }

    public static class ClientStatement implements Statement {

        private String address;

        public ClientStatement(String address) {
            this.address = address;
        }

        @Override
        public Iterable<String> functionDependencies(OsFamily family) {
            return DEPS;
        }

        @Override
        public String render(OsFamily family) {
            switch (family) {
            case UNIX:
                return "sed -i 's/http:\\/\\//http:\\/\\/" + address + ":3142\\//' /etc/apt/sources.list \n"
                        + "apt-get check \n";
            default:
                throw new UnsupportedOperationException();
            }
        }
    }

    @Override
    public String getName() {
        return "apt";
    }

    @Override
    public void installCacheServerInNode(ComputeServiceContext ctx, NodeMetadata server) {
        this.server = server;
        try {
            checkState(ctx.getComputeService()
                    .submitScriptOnNode(server.getId(), new ServerStatement(), RunScriptOptions.NONE)
                    .get(20, TimeUnit.MINUTES).getExitStatus() == 0);
            // TODO enable firewalls
        } catch (Exception e) {
            throw Throwables.propagate(e);
        }
    }

    @Override
    public void enableCacheClientInNode(ComputeServiceContext ctx, NodeMetadata clientNode) {
        checkNotNull(server, "server cannot be null");
        try {
            checkState(ctx.getComputeService()
                    .submitScriptOnNode(clientNode.getId(),
                            new ClientStatement(
                                    checkNotNull(Iterables.getFirst(server.getPrivateAddresses(), null))),
                            RunScriptOptions.NONE)
                    .get(20, TimeUnit.MINUTES).getExitStatus() == 0);
        } catch (Exception e) {
            throw Throwables.propagate(e);
        }
    }

    @Override
    public boolean isServerCompatible(Image serverImage) {
        // try to get the os family through metadata
        if (serverImage.getOperatingSystem() != null) {
            return serverImage.getOperatingSystem().getFamily() == org.jclouds.compute.domain.OsFamily.UBUNTU
                    || serverImage.getOperatingSystem().getFamily() == org.jclouds.compute.domain.OsFamily.DEBIAN;
        }
        // often that is null (like in vbox) so try to get there by name
        String serverName = serverImage.getName().toLowerCase();
        return serverName.contains("ubuntu") || serverName.contains("debian");
    }

    @Override
    public boolean isClientCompatible(NodeMetadata clientNode) {
        // try to get the os family through metadata
        if (clientNode.getOperatingSystem() != null) {
            return clientNode.getOperatingSystem().getFamily() == org.jclouds.compute.domain.OsFamily.UBUNTU
                    || clientNode.getOperatingSystem().getFamily() == org.jclouds.compute.domain.OsFamily.DEBIAN;
        }
        // often that is null (like in vbox) so try to get there by name
        String clientName = clientNode.getHostname().toLowerCase();
        return clientName.contains("ubuntu") || clientName.contains("debian");
    }

}